Flanging-machine



(No Model.) 2 SheetsSheet 1.

R. A. CARTER.

FLANGING MACHINE.

No. 313,918. I Patented Mar. 17, 1885.

WITNESSES:

INVENTOR ATTORNE 2 Sheets-Sheet 2.,

(No Model.)

B. A. CARTER. PLANGING MACHINE.

Patented Mar. 17, 18-85..

ATTORNEY.

WITNESSES;

DMMUM UNITED STATES PATENT FFICE.

ROBERT A. CARTER, OF PITTSBURG, PENNSYLVANIA.

FLANGING- MACHINE.

,SPECIPICA'TION forming part of Letters Patent No. 313,918, dated March 17, 1885.

Application filed September 26, 1884.

T0 at whom it may concern.-

Be it known that 1, ROBERT A. CARTER, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Flanging-Machines, of which improvements the fol; lowing is a specification.

In the accompanying drawings,which make part of this specification, Figure 1 is a top plan view of my improved flanging-machine. Fig. 2 is aview in side elevation of the same. Fig. 3 is a detail view of the adjusting mechanism of the idler-roll. Fig. 4 is a detail view of the flanging-rolls. Fig. 5 is an enlarged detail of the table-journal.

In flanging boiler-heads it has been found necessary,in order to prevent the formation of an outside head or shoulder at the angle or bend, that the lower roller should project beyond the face of the upper roller a distance somewhat greater than the thickness of the plate to be flanged. This projection is effected either by adjusting the upper roll by means of collars or set-screws, or the upper roll is made capable of longitudinal movement, and is normally held with its face in line, or approximately so, with the face of the lower roll 5 but during the flanging operation the upward movement of the plate pushes the upper roll back the required distance against the action of the spring; and, further, during the flanging operation the metal at the angle or bend is thickened or staved up by the con- 3 5 joint action of the swinging table and the flanging-rolls, when the lower of said rolls projects beyond the face of the upper roll, as above stated. This thickening or staying of the metal at the angle or bend compensates for any injurious or weakening effect which the flanging operation may have produced. In some cases it is desirable that the faces of the flanging-rolls should be kept in line during the flanging operation, and that the thickening or staving of the metal at the angle or bend should be prevented, or atleast modified, and at times it is also desirable to vary the radius of the plate to be flanged during the flanging operation; and the object of my invention is to so construct a flanging-machine that the plates may be flanged thereon without the formation (No model.)

of an outside bead or shoulder,even when the faces of the Hanging-rolls are in line, and that the thickening or staving up action may be varied, as desired, during the fianging operation; and to this end my invention consists in the construction and combination of parts, all as more fully hereinafter described and claimed. The standards 1 and 2, mounted on a suitable bed or foundation, are slotted for the reception of the journal-boxes of the shaft 3, the slot in the front standard, 1, being of such dimensions as to permit of alongitudinal and verti cal movement of the flanging-roll 4, secured to the front end of the shaft 3. On the shaft 3, just in front of the standard, is mounted the geanwheel 5, which meshes with the small gear, 6, mounted on the power-shaft 7, said shaft being journaled in the standard 2 and the short standard 8.

In the standard 1 and the auxiliary standard 9 is mounted the shaft 10 of the idler lower orjflanging-roll, 11, driven by frictional contact with the plate to be flanged. Thesestandards 1 and 9 are slotted to permit of the vertical adjustment of the lower roll. The ends of the shaft 10 are supported by suitable bearings provided on their under side with threaded sockets, into which fit screw-rods provided with intermeshing gears at their lower ends, one of said gears meshing withaworm mounted in suitable standards secured to the bed of the machine.

At the rear end of the roll 11 is formed a head or projection, a, against which the plate to be flanged abuts, so that by adjusting this roll longitudinally the depth .of the flange to be formed can be readily regulated. The construction and operation of the vertical adjusting devices of the lower roll, 11, are fully shown and describedin an application filed by me November 30, 1883', and numbered 113,212, and for a more particular description of said construction and operation reference is made to that application.

On the rear side of the standard2 is secured the frame 12,provided with a thread-opening, through which passes the screw 13, having a swiveling connection with the shaft 3, thereby providing for a longitudinal adjustment of the shaft.

Around the rear end of the shaft 10 is formed ception of the sides of the longitudinally-slotted yoke 15, said yoke being provided with a strap, 16, which is connected by a swiveled joint with the screw 17, said screw passing through a threaded opening in the frame 18,

' secured to the rear side of the front standard,

I On these journal-pins are placed the eccen- 1 grooves, 26 and 27.

tric sleeves 21, said sleeves being mounted in the arms 22 of the swinging table 23, the ends of said arms being rearwardly extended and having mounted thereon the counter-balance weights.

Around the peripheries of the journal-pins 20 and the eccentric sleeves 21 are formed a series of grooves, 24 and 25, and in the periphery of the opening in the eccentric sleeve and in the arms 22 are formed corresponding- (See Fig. 4..) By means of these grooves the sleeve can be locked in any desired position on the pin 20, or within the opening in the arm of the table as, for example, it is desired to change the pivotal point of the table with reference to the flanging-rolls, and to retain it at such changed position during the flanging operation the locking-pins are removed and the sleeve is rotated until the proper position has been attained, in which position the sleeve is locked to the table by placing a pin or key into such of the grooves 25 and 27 as may be in line at such adjustment. If, however, it is desired to change the position of the pivotal point during the flanging operation, a pin or key is placed in such of the grooves 24 and 26 as may be in line, thereby locking the eccentric sleeve to the journal-pin and allowing the table to revolve around the sleeve, and consequently changing its pivotal point with relation to the flanging-rolls. The swinging table 23 is provided with the usual longitudinal slot, in which is mounted the usual sliding block for the centering and adjustment of the plate to be flanged. The upper roll, 4, is supported vertically by a spring (not shown) resting upon the top journal-box of the lower flanging-roll, and the vertical adjustment of the upper roll is effected by the conjoint action of said spring and a screw, 28, passing through the top of the standard and bearing at its lower end on the journal of the upper roll. This screw is rotated by means of the pinion 29, secured to the upper end of the screw, and the intermeshing gear-wheel 30, mounted on the frame of the machine and pro- Vided with a suitable handle, whereby it may be rotated.

On one of the arms 22 of the swinging table is secured the gear-wheel 31, the center of said gear being in line with the center of motion of the swinging table. This gear-wheel intermeshes with the pinion 32, secured to the shaft 33, mounted in suitable standards secured to the bed of the machine, said shaft being pro' vided with a hand-wheel, 3-1 whereby said shaft and pinion may be rotated. The teeth of the gear and pinion are madeof such a length that they will remain in operative mesh at all adjustments of the table. The eccentric sleeve is provided with projecting pins, whereby the sleeve may be rotated for the adjustment ofthe table.

In operating my machine the lower flanging-roll is adjusted longitudinally until the head a is at a distance from the face of the upper roll, 4, corresponding to the depth of the flange to be formed. The plateis then placed on the swinging table and secured at its center to the sliding block in said table. The block is then slid forward, pushing the plate between the flangingrolls until the edge of said plate abuts against the head a. The upper roll is then .forced down until the rolls The distance at which the table should be adjusted in relation to the flanging-rolls can only be determined by experiment, and will vary with the thickness of the plate to be flanged; but the outward adjustment may be stated as approximately one and a half times the thickness of the plate from the face of the rolls, and the upward adjustment as one and a quarter to one and ahalf times the thick ness of the plate from the top of the lower roll. The table is now rotated around its journalpins 20, and as the plane of movement of the table is above the bite of the rolls, there will be a constant upward and outward pull on the plate, thereby preventing any downward sag, which would cause a bead or projection at the bend or angle; and, further, this outward and upward pulling will prevent or modify, in accordance with the'adj ustment of the table, the thickening or staving'up of the metal at the bend. a v

, If it is desired at any time to vary the radius of the plate during the flanging operation, the eccentric sleeveis unlocked from the table and looked, as above described, to the journal-pin.

In place of adjusting the table, as above stated, the fianging may be adjusted down and away from the plate. The downward and inward adjustment of the rolls should be the same as the upward and outward adjustment of the table above referred to.

When it is desired to remove the plate from the rolls, the upper roll is drawn inward by its adjusting-screw until it is clear of the flange. The table can then be turned down and the plate released therefrom.

In lieu of mounting the table on the ecentrio sleeve, as above described, the journalpin may be secured to the arm of the table, the free end of said pin being mounted in an eccentric sleeve placed in the lugs on the frame of the machine.

I claim herein as my invention- 1. In a fianging-machine, the combination of a pair of fianging-rolls and a swinging table having its pivotal point vertically adjustable, substantially as set forth.

2. In a fianging-machine, the combination of a pair of flanging-rolls and a swinging table having its pivotal point horizontally and vertically adjustable, substantially as set forth. I

3. In a flanging-maohine, the combination of a swinging table and a pair of flanging-rolls,

both of said rolls being longitudinally adjustable, substantially as set forth.

4. In a flanging-machine, the combination of a swinging table and a pair of fianging-rolls,

journal-pins secured to the frame of the ma chine, eccentric sleeves surrounding said jour nal-pins and mounted in the arms of the swinging table, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ROBERT A. CARTER.

Witnesses:

DARWIN S. WOLCOTI, R. H. WHITTLEsEY. 1 

